ZR1 center of balance ?

[xxxscimitarxxx]

I dont have room for a two post lift in my garage so lm going to fabricate a pair of inspection ramps..... 12ft long and 3ft high ....sketch attached.....errrr....not....will do so later

but with a tipping point calculated in the design to enable me to drive the car up the ramp to a certain point and then tip the ramps forward to get level

Question.......

where is the longitudinal center of balance at tyre level on a Z.....lm guessing somewhere just behind where the gear shift is but was wondering if this was a known spec

l could find it trial and error....and it would change according to fuel load....but the closer l know then the more accurately l can design the ramps

front to rear wheel base is 96''

LOL.....when are you guys going metric

[xxxscimitarxxx]

profile of ramp

[QB93Z]

That is an interesting concept. I would suggest that the "exact" center of mass is not really that critical because you will have to have enough room on the ramps to allow for positioning tolerence and weight variations such as fuel as you mentioned.

I would envision that the car would be driven up the ramp to just aft of the tip point and then a jack used to raise the rear end of the ramps (and car) to the level position. This is sort of how a QuickLift works.

Or you planning on driving to the tip point and then riding it down to the tipped position?

Jim

[-=Jeff=-]

I have seen those at car dealers for displays outside.. Drive on and the weight of the car tips the 'rack' to the horizontal position just as you want to do..
just need to be sure the approach portion is long enough to get the whole car on before the forward tip.

[xxxscimitarxxx]

yes its something on those lines.....l cant say lm the original thinker as lve got the idea from these guys

http://www.restorationramps.co.uk/



but l wanted something with more lift....and l didnt want to pay them $1500 dollars for something l could make for $500 especially when for about $1700 in UK you can get a new two post lift

l think that with the system you are meant to get some of the main masses over the tipping point so it makes jacking the rear of the car up to level a bit easier....alternatively you can reverse on and simply have the rear 3ft in the air for good access with out jacking the front

[Hog]

Cool idea, Ive never seen anything like that before. Thanks for sharinge.

peace
Hog